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Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 8
– WATER HEATER MANAGEMENT
OMM-0143_A
• GF
-216
•
9/6/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 123 of 170
8.7.1 Installation Notes
AERCO requires a WHM sequencing valve in multi-unit Innovation configurations. When WHM
is employed, Modbus communication with BAS is available via Modbus TCP (go to
Main Menu
→
Advanced Setup
→
Comm & Network
→
BAS
).
If you are installing a WHM system that also includes a ProtoNode SSD, you
must
adhere to
the procedure listed below. Failure to complete these steps can result in the failure of the WHM
system.
a)
Do
NOT
install the ProtoNode Device at the outset of the installation. If the ProtoNode
Device is already installed, you must physically disconnect it from the Modbus network in
I/O board.
b)
Make sure that the Modbus load and bias resistors are properly configured for the system
to operate without the ProtoNode installed.
c)
Temporarily set the WHM system for Constant Setpoint mode of operation (see below).
d)
Turn on and completely test the installation to verify that it is operating proper.
e)
Once the installation is working properly as a WHM system, install the ProtoNode Device.
f)
Make sure that the Modbus load and bias resistors are properly configured for the system
to operate with the ProtoNode installed.
g)
Set the WHM system for desired mode of operation (Setpoint mode).
h)
Test the system completely with the ProtoNode installed.
8.7.2 Hardware Installation
All Innovation Water Heaters which will be controlled by a WHM Manager must be equipped
with an actuator-controlled sequencing valve (P/N
92123
). If this valve is not already installed on
the cold-water inlet, proceed as follows:
WHM Hardware Installation
5.
Remove the sequencing valve from its stowed location.
6.
Refer to Figure 8.7 and attach the valve to the cold-water inlet of the unit using the pipe
union and nipple provided.
7.
Ensure that the valve is positioned with the actuator enclosure position as shown in Figure
8.7.
8.
AERCO recommends that another pipe nipple and union be attached to the valve inlet prior
to connecting the cold-water supply piping.
9.
Tighten all pipe connections after the sequencing valve is properly positioned.
10.
Connect the 4-pin Molex connector on the sequencing valve to the mating connector on the
Innovation harness at the rear of the unit.
11.
This completes the sequencing valve installation.